<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>页面头部分析</title>
</head>
<body>

<header> <h2>页面头部</h2></header>

<section> <h2>网页主体</h2></section>

<footer> <h2>页面脚部</h2></footer>


</body>
</html>